1 2022-12-11T20:57:27+00:00 method=node/dr-wilberforce-williams-chicago-defender;methodNumNodes=1; 1 Dr Wilberforce Williams, Chicago Defender Dr Wilberforce Williams, Chicago Defender Dr. A. Wilberforce Williams, “Tales On Preventive Measures, First Aid Remedies Hygienics And Sanitation: The Policy Of Mercy Hospital And Others, The Chicago Defender (National Edition), September 2, 1922, p. 12. Accessed through ProQuest Historical Newspapers. plain 2022-12-11T20:57:27+00:00